include/linux/linkage.h

   1 #ifndef _LINUX_LINKAGE_H
   2 #define _LINUX_LINKAGE_H
   3
   4 #include <asm/linkage.h>
   5
   6 #ifdef __cplusplus
   7 #define CPP_ASMLINKAGE extern "C"
   8 #else
   9 #define CPP_ASMLINKAGE
  10 #endif
  11
  12 #ifndef asmlinkage
  13 #define asmlinkage CPP_ASMLINKAGE
  14 #endif
  15
  16 #ifndef prevent_tail_call
  17 # define prevent_tail_call(ret) do { } while (0)
  18 #endif
  19
  20 #ifndef __ALIGN
  21 #define __ALIGN         .align 4,0x90
  22 #define __ALIGN_STR     ".align 4,0x90"
  23 #endif
  24
  25 #ifdef __ASSEMBLY__
  26
  27 #define ALIGN __ALIGN
  28 #define ALIGN_STR __ALIGN_STR
  29
  30 #ifndef ENTRY
  31 #define ENTRY(name) \
  32   .globl name; \
  33   ALIGN; \
  34   name:
  35 #endif
  36
  37 #ifndef WEAK
  38 #define WEAK(name)         \
  39         .weak name;        \
  40         name:
  41 #endif
  42
  43 #define KPROBE_ENTRY(name) \
  44   .pushsection .kprobes.text, "ax"; \
  45   ENTRY(name)
  46
  47 #define KPROBE_END(name) \
  48   END(name);             \
  49   .popsection
  50
  51 #ifndef END
  52 #define END(name) \
  53   .size name, .-name
  54 #endif
  55
  56 #ifndef ENDPROC
  57 #define ENDPROC(name) \
  58   .type name, @function; \
  59   END(name)
  60 #endif
  61
  62 #endif
  63
  64 #define NORET_TYPE    /**/
  65 #define ATTRIB_NORET  __attribute__((noreturn))
  66 #define NORET_AND     noreturn,
  67
  68 #ifndef FASTCALL
  69 #define FASTCALL(x)     x
  70 #define fastcall
  71 #endif
  72
  73 #endif